<template>
  <transition name="move">
    <div class="food" v-show="isShow" ref="food">
      <div class="food-content">
        <div class="image-header">
          <img :src="food.image" />
          <div class="back" @click="show(false)">
            <i class="icon-arrow_lift"></i>
          </div>
        </div>

        <div class="content">
          <h1 class="title">{{ food.name }}</h1>
          <div class="detail">
            <span class="sell-count">月售{{ food.sellCount }}份</span>
            <span class="rating">好评率{{food.rating}}%</span>
          </div>
          <div class="price">
            <span class="now">￥{{food.price}}</span>
            <span class="old" v-show="food.oldPrice">￥{{food.oldPrice}}</span>
          </div>
          <div class="cartcontrol-wrapper">
            <cartcontrol :food="food" :update-food-count="updateFoodCount">加入购物车</cartcontrol>
          </div>
          <div class="buy" v-if="!food.count" @click="updateFoodCount(food, true, $event)">加入购物车</div>
        </div>

        <split></split>
        <div class="info">
          <h1 class="title">商品信息</h1>
          <p class="text">{{food.info}}</p>
        </div>
        <split></split>

        <div class="rating">
          <h1 class="title">商品评价</h1>
          <ratingselect
            :desc="desc"
            :only-content="onlyContent"
            :ratings="food.ratings"
            :select-type="selectType"
            @setSelectType="setSelectType"
            @switchOnlyContent="switchOnlyContent"
          ></ratingselect>

          <div class="rating-wrapper">
            <ul>
              <!-- ctrl + shift +f  format-->
              <li
                class="rating-item border-1px"
                v-for="(rating, index) in filterRatings"
                :key="index"
              >
                <div class="user">
                  <span class="name">{{rating.username}}</span>
                  <img width="12" height="12" class="avatar" :src="rating.avatar" />
                </div>
                <div class="time">{{rating.rateTime}}</div>
                <p class="text">
                  <span :class="rating.rateType===0 ? 'icon-thumb_up' : 'icon-thumb_down'"></span>
                  {{rating.text}}
                </p>
              </li>
            </ul>
            <div class="no-rating" v-show="!food.ratings || food.ratings.length===0">暂无评价</div>
          </div>
        </div>
      </div>
    </div>
  </transition>
</template>

<script>
import Vue from "vue";
import BScroll from "better-scroll";
import cartcontrol from "../cartControl/cartControl.vue";
import split from "../split/split.vue";
import ratingselect from "../ratingselect/ratingselect.vue";

export default {
  props: {
    food: Object,
    updateFoodCount: Function
  },
  data() {
    return {
      isShow: false,
      onlyContent: true,
      selectType: 2
    };
  },
  created() {
    this.desc = {
      all: "全部",
      positive: "满意",
      nagetive: "不满意"
    };
  },
  methods: {
    show(isShow) {
      this.isShow = !this.isShow;

      if (isShow) {
        Vue.nextTick(() => {
          if (!this.scoll) {
            this.scoll = new BScroll(this.$refs.food, {
              click: true
            });
          } else {
            this.scoll.refresh();
          }
        });
      }
    },
    setSelectType(selectType) {
      this.selectType = selectType;
      this.$nextTick(() => {
        this.scoll.refresh();
      });
    },
    switchOnlyContent() {
      this.onlyContent = !this.onlyContent;
      this.$nextTick(() => {
        this.scoll.refresh();
      });
    }
  },
  computed: {
    filterRatings() {
      if (!this.food.ratings) {
        return;
      }
      // console.log(this)
      //-------------------------------------------------------------------------------------------------------------------------------------!
      const { selectType, onlyContent } = this;
      // selectType: 0, 1, 2
      // onlyContent: true false
      return this.food.ratings.filter(rating => {
        if (selectType === 2) {
          // 如果onlyContent为false, 直接返回true, 否则还要看text有没有值
          return !onlyContent || !!rating.text;
        } else {
          // 既要比较type, 还要比较content
          return (
            selectType === rating.rateType && (!onlyContent || !!rating.text)
          );
        }
      });
    }
  },
  components: {
    cartcontrol,
    split,
    ratingselect
  }
};
</script>

<style lang="stylus" rel="stylesheet/stylus">
@import '../../common/stylus/mixins.styl';

.food {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 48px;
  z-index: 30;
  width: 100%;
  background: #fff;

  &.move-enter-active, &.move-leave-active {
    transition: all 0.2s linear;
  }

  &.move-enter, &.move-leave-active {
    opacity: 0;
    transform: translate3d(100%, 0, 0);
  }

  .image-header {
    position: relative;
    width: 100%;
    height: 0;
    padding-top: 100%;

    img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
    }

    .back {
      position: absolute;
      top: 10px;
      left: 0;

      .icon-arrow_lift {
        display: block;
        padding: 10px;
        font-size: 20px;
        color: #fff;
      }
    }
  }

  .content {
    position: relative;
    padding: 18px;

    .title {
      line-height: 14px;
      margin-bottom: 8px;
      font-size: 14px;
      font-weight: 700;
      color: rgb(7, 17, 27);
    }

    .detail {
      margin-bottom: 18px;
      line-height: 10px;
      height: 10px;
      font-size: 0;

      .sell-count, .rating {
        font-size: 10px;
        color: rgb(147, 153, 159);
      }

      .sell-count {
        margin-right: 12px;
      }
    }

    .price {
      font-weight: 700;
      line-height: 24px;

      .now {
        margin-right: 8px;
        font-size: 14px;
        color: rgb(240, 20, 20);
      }

      .old {
        text-decoration: line-through;
        font-size: 10px;
        color: rgb(147, 153, 159);
      }
    }

    .cartcontrol-wrapper {
      position: absolute;
      right: 12px;
      bottom: 12px;
    }

    .buy {
      position: absolute;
      right: 18px;
      bottom: 18px;
      z-index: 10;
      height: 24px;
      line-height: 24px;
      padding: 0 12px;
      box-sizing: border-box;
      border-radius: 12px;
      font-size: 10px;
      color: #fff;
      background: rgb(0, 160, 220);

      &.fade-transition {
        transition: all 0.2s;
        opacity: 1;
      }

      &.fade-enter, &.fade-leave {
        opacity: 0;
      }
    }
  }

  .info {
    padding: 18px;

    .title {
      line-height: 14px;
      margin-bottom: 6px;
      font-size: 14px;
      color: rgb(7, 17, 27);
    }

    .text {
      line-height: 24px;
      padding: 0 8px;
      font-size: 12px;
      color: rgb(77, 85, 93);
    }
  }

  .rating {
    padding-top: 18px;

    .title {
      line-height: 14px;
      margin-left: 18px;
      font-size: 14px;
      color: rgb(7, 17, 27);
    }

    .rating-wrapper {
      padding: 0 18px;

      .rating-item {
        position: relative;
        padding: 16px 0;
        border-1px(rgba(7, 17, 27, 0.1));

        .user {
          position: absolute;
          right: 0;
          top: 16px;
          line-height: 12px;
          font-size: 0;

          .name {
            display: inline-block;
            margin-right: 6px;
            vertical-align: top;
            font-size: 10px;
            color: rgb(147, 153, 159);
          }

          .avatar {
            border-radius: 50%;
          }
        }

        .time {
          margin-bottom: 6px;
          line-height: 12px;
          font-size: 10px;
          color: rgb(147, 153, 159);
        }

        .text {
          line-height: 16px;
          font-size: 12px;
          color: rgb(7, 17, 27);

          .icon-thumb_up, .icon-thumb_down {
            margin-right: 4px;
            line-height: 16px;
            font-size: 12px;
          }

          .icon-thumb_up {
            color: rgb(0, 160, 220);
          }

          .icon-thumb_down {
            color: rgb(147, 153, 159);
          }
        }
      }

      .no-rating {
        padding: 16px 0;
        font-size: 12px;
        color: rgb(147, 153, 159);
      }
    }
  }
}
</style>